A femoral clamp to reduce soft tissue artefact: accuracy and reliability in measuring three-dimensional knee kinematics during gait
File(s)
Accepted version
Supporting information
Author(s)
Ding, Ziyun
Gudel, Manuela
Smith, Samuel HL
Ademefun, Richard A
Bull, Anthony Michael James
Type
Journal Article
Abstract
The accurate measurement of full sixdegrees-of-freedom(DOFs) knee joint kinematics is prohibited by soft tissue artifact (STA), which remains the greatest source of error. The purpose of this study was to present and assess a new femoral clampto reduce STA at the thigh. It was hypothesised that the device can preserve the natural knee joint kinematics pattern and outperform a conventional marker mounted rigid cluster during gait. 6Six healthy subjects were askedto walk barefoot on level ground with a cluster marker set (cluster gait) followed by a cluster-clamp-merged marker set (clamp gait) and their kinematics wasmeasured using the clustermethod in clustergait and thecluster and clamp methodssimultaneouslyin clamp gait. Two operators performed the gait measurement. A six DOFs knee joint model wasdeveloped to enable comparison withthe gold standard knee joint kinematics measured using adual fluoroscopic imaging technique. One-dimensional paired t-tests were used to compare the knee joint kinematics waveforms between cluster gait and clamp gait. The accuracy was assessed in terms of the root mean square error, coefficient of determination and Bland-Altman plots. Inter-operatorreliability was assessed15usingthe intra-class correlation coefficient.The result showed that the femoral clamp did not change the walking speed andknee joint kinematicswaveforms. Additionally, clamp gait reduced the rotationand translation errorsin the transverse plane and improved the inter-operator reliabilitywhen compared to the rigid cluster method, suggesting amore accurate and reliable measurement of knee joint kinematics.
Date Issued
2019-12-12
Date Acceptance
2019-09-26
Citation
Journal of Biomechanical Engineering, 2019, 142 (4), pp.044501-1-044501-8
ISSN
0148-0731
Publisher
American Society of Mechanical Engineers
Start Page
044501-1
End Page
044501-8
Journal / Book Title
Journal of Biomechanical Engineering
Volume
142
Issue
4
Copyright Statement
© 2020 by ASME
Sponsor
The Royal British Legion
Identifier
https://asmedigitalcollection.asme.org/biomechanical/article/doi/10.1115/1.4045115/1065451/A-Femoral-Clamp-to-Reduce-Soft-Tissue-Artifact
Grant Number
Centre for Blast Injury Studie
Subjects
Science & Technology
Life Sciences & Biomedicine
Technology
Biophysics
Engineering, Biomedical
Engineering
IN-VIVO DETERMINATION
CRUCIATE LIGAMENT-DEFICIENT
SKIN MOVEMENT ARTIFACT
JOINT KINEMATICS
TIBIOFEMORAL KINEMATICS
MOTION
COMPENSATION
REPEATABILITY
OPTIMIZATION
BIOMECHANICS
0903 Biomedical Engineering
0913 Mechanical Engineering
Biomedical Engineering
Publication Status
Published
Date Publish Online
2019-12-12